Seymour Duncan Custom Shop JBA8/59A4 Pickup Set

This Custom Shop set from Seymour Duncan includes a JB in the bridge with hot alnico 8 magnets and a 59 neck with alnico 4 for tight bass.

Seymour Duncan users are replacing the stock magnets in popular models and creating hybrids. The monikers they've given them include the "Custom 8", "JB 8," and "A4 '59".

The Forum hasn't thought of them all! There are opportunities for magnet swaps in popular Strat, Tele and P90 Models with hybrid combinations that have yet to be discovered.

These home-grown designs are available as Seymour Duncan Custom Shop offerings.

Why Magnets Matter
Consider the Custom Custom (Alnico 2), Custom 5 (Alnico 5) and Duncan Custom (Ceramic) Models -- their coils are wound precisely the same, yet all three sound and perform distinctly differently due to their respective magnet types.

Magnet type affects a pickup's tone, output, feel, and playing dynamics. Their interchangeability facilitates more pickup ideations across humbuckers, Strat and Tele single coils, P-90s, and even humbucker-sized single coils like Rails and Lil/Jr.s.


- JB Bridge - Alnico 8
- 59 Neck - Alnico 4
- Alnico 8 The Strongest and loudest Alnico magnet. Exceptional mid-range, smooth treble response.
- Alnico 4 In between Alnico V and Alnico II in magnetism, Alnico IV Magnets have a tighter bass response than Alnico II and a more even mid-range response. They are brighter on the top than Alnico II but sweeter than Alnico V.
WARNING: Cancer and Reproductive Harm -

Dimensions and Weight in Packaging
Base Item
Shipping Weight: 0.69 lbs
Shipping Dimensions: 6 x 4 x 2 in
Manufacturer Part Number (MPN): 11828-03-JB

For support or warranty questions, please contact the manufacturer:
Phone: 805-964-9610


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